Hi,
With Technical Analysis, all you are concerned with is the price, everything is already factored into the price, so that is really what you are trading. Fundamentals, management, news, world markets, all factored in.
There is no harm using fundamental analysis to pick exceptionally good and well run companies to keep an eye on in the first place!
By the time you get the fundamentals of a company they could already have changed.
With Technical Indicators, most lag the price, so they can't tell you what the price will be tomorrow.
Hope this helps.